Acid leaching device for acidification modification of water-quenched slag

Abstract

The acid leaching device comprises a base plate, the base plate is connected with an acid leaching barrel, the acid leaching barrel is internally provided with a filter screen barrel, the filter screen barrel is internally provided with a plurality of material containing assemblies, the top of the filter screen barrel is provided with an installation ring, the top of the installation ring is provided with an installation cover, and the installation cover is provided with a plurality of material containing assemblies. A plurality of material containing assemblies are installed on the installation cover, the material containing assemblies are provided with material containing screen drums inside the filter screen drum, the left side and the right side of the acid leaching drum are symmetrically provided with lifting assemblies connected with the installation cover, and a stirring assembly movably connected with the installation cover is arranged between the material containing assemblies. Water-quenched slag of different specifications or batches can be placed to be subjected to acid leaching treatment, the flexibility of the equipment is improved, the pressing plate in the material containing screen drum can press the water-quenched slag to the position below the liquid level of acid leaching liquid through cooperation of the hand wheel, the threaded rod and the threaded drum, and the acid leaching effect is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of acid leaching equipment, in particular to an acid leaching device used for acidification and modification of water-quenched slag. Background Art

[0002] Water-quenched slag is a loose granular slag formed by rapidly cooling the hot-melt slag from the blast furnace in the ferrochrome smelting industry with water. After production, this slag needs to undergo certain treatment before it can be effectively recycled. Acid leaching, as an effective treatment method, is widely used in the acidification and modification of water-quenched slag. The acid leaching method mainly uses an aqueous solution of sulfuric acid as a leaching agent. During the acidification and modification of water-quenched slag, sulfuric acid reacts with metal oxides, reducing the alkalinity of the water-quenched slag leachate. The generated sulfate fills the pores of the water-quenched slag, preventing the ferrochrome alloy and other heavy metal elements inside the water-quenched slag from being leached again and inhibiting the precipitation of heavy metals, thereby achieving the purpose of acidification and modification of water-quenched slag.

[0003] Based on the above situation, the prior art patent CN210473939U discloses an acid leaching device for treating metallurgical waste slag. This device utilizes the cooperation of left and right threaded rods with left and right fixed plates and a first ball bearing to achieve the rotation of the left and right rotating shafts, the left and right threaded rods, and the left and right threaded rods. Because the left and right threaded rods have opposite external threads, the left and right drive blocks cannot rotate due to the constraints of the fixed rods. Therefore, rotation of the right rotating shaft causes the left and right drive blocks to move in opposite directions, which in turn drives the left and right cover plates to move in opposite directions. The cooperation of the connecting plate and the second ball bearing allows the L-shaped rod and hydraulic cylinder to rotate freely. The height of the storage box can be controlled by adjusting the length of the hydraulic cylinder output end. Four sets of legs are used to support the entire box. During operation, the left and right cover plates are first separated to place the waste slag into the storage box. Then, the storage box is lowered by controlling the hydraulic cylinder and immersed in the acid solution inside the box. Acid enters the storage box through the inlet and outlet to react with the waste residue. After the reaction is complete, the left and right covers move toward each other again to seal the opening, and the acid gas enters the alkali liquid tank for purification. After the entire process is completed, the left and right covers are separated again, and the storage box is lifted to easily remove the waste residue. This design not only improves the efficiency of waste residue treatment, but also reduces usage limitations and makes waste residue removal more convenient.

[0004] However, the acid leaching device has some shortcomings when in use. First, the acid leaching device cannot simultaneously acid leaching water-quenched slag of different specifications or batches, which makes the working efficiency of the device low. Second, the device cannot ensure that the water-quenched slag is always located below the acid liquid during the acid leaching process. Utility Model Content

[0005] In view of the technical defects existing in the background technology, the present invention proposes an acid leaching device for acidification and modification of water-quenched slag. In order to further solve the above technical problems and meet actual needs, the specific technical solution is as follows:

[0006] A pickling device for acidifying and modifying water-quenched slag comprises a chassis connected to a pickling cylinder, a filter screen cylinder being provided inside the pickling cylinder, a plurality of material holding assemblies being provided inside the filter screen cylinder, a mounting ring being provided on the top of the filter screen cylinder, a mounting cover being installed on the top of the mounting ring, the material holding assembly being installed on the mounting cover, a material holding sieve cylinder being provided inside the filter screen cylinder, lifting assemblies connected to the mounting cover being symmetrically provided on the left and right sides of the pickling cylinder, and a stirring assembly movably connected to the mounting cover being provided between the material holding assemblies.

[0007] Furthermore, the top outer side wall of the filter screen cylinder is connected to the inner wall of the mounting ring, and the top and bottom surfaces of the mounting ring are provided with upper and lower ring grooves that are parallel and opposite to each other. The top side wall of the pickling cylinder can be removably installed in the lower ring groove, and the bottom side wall of the mounting cover can be removably installed in the upper ring groove.

[0008] Furthermore, a liquid inlet pipe communicating with the interior of the pickling cylinder is provided on the side wall at the top position of the pickling cylinder, and a liquid discharge pipe communicating with the interior of the pickling cylinder is provided on the side wall at the bottom position of the pickling cylinder, and both the liquid discharge pipe and the liquid inlet pipe are equipped with valves.

[0009] Furthermore, the material holding assembly also includes a fixing ring, a top cover, a threaded cylinder, a handwheel, a threaded rod, and a pressure plate. The upper surface of the mounting cover is penetrated by a plurality of mounting channels that are rotationally symmetrically distributed. The material holding screen cylinder is installed on the mounting cover through the mounting channels. The fixing ring is arranged above the mounting channels on the upper surface of the mounting cover. The upper surface of the fixing ring is provided with a cover ring groove. The lower surface of the fixing ring is connected to the top surface of the material holding screen cylinder. The barrel of the material holding screen cylinder is placed in the mounting channels.

[0010] Furthermore, a cover ring groove is provided on the upper surface of the top cover, and the bottom end of the top cover can be detachably installed in the cover ring groove of the top cover. A number of exhaust pipes connected to the interior of the pickling cylinder are provided on the surface of the top cover. A threaded cylinder is vertically penetrated through the center of the top cover, and a threaded rod with threaded matching is provided inside the threaded cylinder. The pressure plate is arranged in the material screen cylinder, and the handwheel is arranged above the top cover. The upper end of the threaded rod is connected to the handwheel, and the lower end of the threaded rod is connected to the pressure plate.

[0011] Furthermore, the lifting assembly includes a lifting cylinder, a connecting rod, and a fixing screw. The cylinder end of the lifting cylinder is connected to the chassis. One end of the connecting rod is provided with a connecting head. The other end of the connecting rod is connected to the telescopic rod end of the lifting cylinder. A first threaded hole is longitudinally provided inside the connecting head.

[0012] Furthermore, the circumferential side walls of the mounting cover are symmetrically provided with fixing slots that can engage with the connector, and second threaded holes are respectively provided at the top and bottom of the fixing slots. The second threaded holes are coaxially arranged with the first threaded holes, and the fixing screws fix the connector in the fixing slots through the second threaded holes and the first threaded holes.

[0013] Furthermore, the stirring assembly includes a drive motor, a rotating shaft, and a U-shaped stirring frame. The drive motor is installed on the top of the mounting cover, the U-shaped stirring frame is arranged in the filter screen cylinder, the rotating shaft is rotatably installed in the mounting cover, the upper end of the rotating shaft is connected to the power output shaft of the drive motor, the lower end of the rotating shaft is connected to the U-shaped stirring frame, and the lower end of the material screen cylinder is placed between the U-shaped stirring frame and the rotating shaft.

[0014] The beneficial effects of the utility model are:

[0015] By providing multiple groups of material holding components, water-quenched slag of different specifications or batches can be placed for acid leaching treatment, increasing the flexibility of the equipment. At the same time, the U-shaped stirring frame of the stirring component can stir the acid leaching liquid to ensure full contact between the water-quenched slag and the acid leaching liquid, thereby improving the acid leaching efficiency and acid leaching quality. The lifting component cooperates with the mounting cover through the lifting electric cylinder and the connecting rod, which can conveniently lift the mounting cover and the material holding component. After the acid leaching is completed, the material holding screen cylinder can be easily lifted out of the acid leaching cylinder for convenient removal and disposal of the water-quenched slag. The cooperation between the mounting ring and the upper and lower ring grooves, as well as the fixing effect of the fixing screws, can easily disassemble and clean the filter screen cylinder, further facilitating the maintenance and use of the equipment. The pressure plate inside the material holding screen cylinder can press the water-quenched slag below the liquid level of the acid leaching liquid through the cooperation of the handwheel, threaded rod and threaded barrel, effectively preventing the water-quenched slag from being driven to the surface of the acid leaching liquid by bubbles generated during the acid leaching process, thereby ensuring the acid leaching effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a cross-sectional view of the internal structure of the utility model.

[0017] Figure 2 For the Figure 1 A partial enlarged schematic diagram of the AA point in the middle.

[0018] Figure 3 This is a schematic structural diagram of the stirring component and the material holding component of the present utility model.

[0019] Figure 4 This is a schematic diagram of the distribution of the material holding components on the installation cover of the present invention.

[0020] Figure markings: chassis 1, pickling cylinder 2, filter screen cylinder 21, mounting ring 22, upper ring groove 221, lower ring groove 222, mounting cover 23, fixing slot 231, second threaded hole 232, mounting channel 233, liquid inlet pipe 24, liquid discharge pipe 25, valve 26, material holding assembly 3, material holding screen cylinder 31, fixing ring 32, cover ring groove 33, top cover 34, exhaust pipe 341, threaded cylinder 35, handwheel 36, threaded rod 37, pressure plate 38, handle 39, stirring assembly 4, drive motor 41, rotating shaft 42, U-shaped stirring frame 43, lifting assembly 5, lifting electric cylinder 51, connecting rod 52, connecting head 53, first threaded hole 54, fixing screw 55. DETAILED DESCRIPTION

[0021] The following describes the implementation of the present invention in conjunction with the accompanying drawings and relevant embodiments. The implementation of the present invention is not limited to the following embodiments, and the present invention involves relevant necessary components in this technical field, which should be regarded as common knowledge in this technical field and can be known and mastered by technical personnel in this technical field.

[0022] like Figures 1 to 4 As shown, the utility model provides a technical solution: an acid leaching device for acidifying and modifying water-quenched slag, comprising a chassis 1, the chassis 1 is connected to an acid leaching cylinder 2, a filter screen cylinder 21 is provided inside the acid leaching cylinder 2, a plurality of material holding components 3 are provided inside the filter screen cylinder 21, a mounting ring 22 is provided on the top of the filter screen cylinder 21, a mounting cover 23 is installed on the top of the mounting ring 22, the material holding component 3 is installed on the mounting cover 23, the material holding component 3 is provided with a material holding screen cylinder 31 inside the filter screen cylinder 21, lifting components 5 connected to the mounting cover 23 are symmetrically provided on the left and right sides of the acid leaching cylinder 2, and a stirring component 4 movably connected to the mounting cover 23 is provided between the material holding components 3.

[0023] In the structure of the present invention, the top outer side wall of the filter screen cylinder 21 is connected to the inner wall of the mounting ring 22, and the top and bottom surfaces of the mounting ring 22 are provided with an upper ring groove 221 and a lower ring groove 222 which are parallel and opposite to each other. The top side wall of the pickling cylinder 2 is detachably mounted in the lower ring groove 222, and the bottom side wall of the mounting cover 23 is detachably mounted in the upper ring groove 221.

[0024] The material holding assembly 3 of the present invention is provided with multiple structures to meet the requirements of water-quenched slag processing of different specifications or batches. The lifting assembly 5 realizes the flexible lifting of the installation cover 23 and the material holding assembly 3 through the cooperation of the lifting electric cylinder 51, the connecting rod 52 and the fixing screw 55, which is convenient for lifting the material holding screen drum 31 from the acid soaking drum 2 after the acid soaking is completed, and also convenient for disassembly and cleaning of the filter screen drum 21. The engagement structure of the connecting head 53 and the fixing slot 231, as well as the first threaded hole 54 and the second threaded hole 232, ensure the stability and safety during the lifting process. The stirring assembly 4 is driven by the motor 41 The cooperation of the rotating shaft 42 and the U-shaped stirring frame 43 realizes uniform stirring of the acid leaching liquid, thereby improving the efficiency and quality of the acid leaching and ensuring sufficient contact between the water-quenched slag and the acid leaching liquid. The shape of the U-shaped stirring frame 43 avoids interference with the material screen drum 31 during the stirring process, ensuring the continuity and stability of the stirring. The filter screen drum 21 finely filters the acid leaching liquid to facilitate subsequent acid recovery and treatment. The pressure plate 38 inside the material screen drum 31 can press the water-quenched slag below the liquid level of the acid leaching liquid through the cooperation of the handwheel 36, the threaded rod 37 and the threaded cylinder 35, ensuring sufficient reaction of the water-quenched slag during the acid leaching process.

[0025] As one of the preferred embodiments of the present invention, Figure 1 As shown, a liquid inlet pipe 24 communicating with the interior of the pickling cylinder 2 is provided on the side wall at the top position of the pickling cylinder 2, and a liquid discharge pipe 25 communicating with the interior of the pickling cylinder 2 is provided on the side wall at the bottom position of the pickling cylinder 2. Both the liquid discharge pipe 25 and the liquid inlet pipe 24 are equipped with valves 26.

[0026] The function of the liquid inlet pipe 24 is to inject the required pickling liquid (such as sulfuric acid aqueous solution) into the pickling tank 2 before or during the pickling process. The liquid discharge pipe 25 is responsible for discharging the pickling liquid and the dissolved substances therein (such as the soluble components in the water-quenched slag) from the pickling tank 2 after the pickling process is completed. Valves 26 are respectively installed on the liquid discharge pipe 25 and the liquid inlet pipe 24 to control the opening and closing of these two pipes.

[0027] As one of the preferred embodiments of the present invention, Figure 1 、 Figure 3 and Figure 4 As shown, the material holding assembly 3 also includes a fixing ring 32, a top cover 34, a threaded cylinder 35, a hand wheel 36, a threaded rod 37, and a pressure plate 38. The upper surface of the mounting cover 23 is penetrated by a plurality of mounting channels 233 that are rotationally symmetrically distributed. The material holding screen drum 31 is mounted on the mounting cover 23 through the mounting channels 233. The fixing ring 32 is arranged above the mounting channels 233 on the upper surface of the mounting cover 23. The upper surface of the fixing ring 32 is provided with a covering ring groove 33. The lower surface of the fixing ring 32 is connected to the top surface of the material holding screen drum 31. The barrel of the material holding screen drum 31 is placed in the mounting channels 233.

[0028] In the structure of the material holding assembly 3, a covering ring groove 33 is provided on the upper surface of the top cover 34, and the bottom end of the top cover 34 is detachably installed in the covering ring groove 33 of the top cover 34. A plurality of exhaust pipes 341 connected to the interior of the pickling cylinder 2 are provided on the surface of the top cover 34. A threaded cylinder 35 is vertically penetrated through the center position of the top cover 34, and a threaded rod 37 with a threaded fit is provided inside the threaded cylinder 35. The pressing plate 38 is arranged in the material holding screen cylinder 31, and the handwheel 36 is arranged above the top cover 34. The upper end of the threaded rod 37 is connected to the handwheel 36, and the lower end of the threaded rod 37 is connected to the pressing plate 38.

[0029] The material screen cylinder 31 is used to hold the water-quenched slag. Its cylinder body is placed in the installation channel 233 and is installed on the installation cover 23 through the fixing ring 32. The pressure plate 38 is set in the material screen cylinder 31 to press the water-quenched slag down to below the liquid level of the acid leaching liquid. The threaded rod 37 is connected to the top cover 34 through the threaded cylinder 35 and is vertically arranged at the center of the top cover 34. When the position of the pressure plate 38 needs to be adjusted, the operator can rotate the handwheel 36. The rotation of the handwheel 36 drives the threaded rod 37 to move up and down in the threaded cylinder 35, thereby pushing or pulling The pressing plate 38 moves up and down in the material screen cylinder 31. This design allows the operator to flexibly adjust the position of the pressing plate 38 according to actual needs to ensure that the water-quenched slag is always immersed in the acid leaching liquid. The surface of the top cover 34 is provided with multiple waste gas pipes 341 connected to the interior of the acid leaching cylinder 2 for discharging waste gas generated during the acid leaching process. The operator can connect the delivery pipe to the waste gas pipe 341 and deliver the waste gas to the external waste gas treatment equipment through the delivery pipe, thereby effectively reducing the harm of harmful gases generated during the acid leaching process to the environment and operators.

[0030] The upper surface of the mounting cover 23 is provided with a rotationally symmetrical mounting channel 233, which provides a mounting space for the material screen drum 31. The body of the material screen drum 31 is placed in the mounting channel 233, and the fixing ring 32 ensures that the position of the material screen drum 31 is stable. At this time, the top surface of the material screen drum 31 is flush with the top edge of the mounting channel 233. The fixing ring 32 is placed above the mounting channel 233 on the upper surface of the mounting cover 23. The upper surface of the fixing ring 32 is provided with a covering ring groove 33, which is used to install and cover the top cover 34 on the fixing ring 32. The bottom end of the top cover 34 is detachably mounted in the covering ring groove 33 of the fixing ring 32, and the top cover 34 is removably mounted in the covering ring groove 33 of the fixing ring 32 by lifting the hand wheel. 36, the hand wheel 36 drives the bottom end of the top cover 34 to disengage the covering ring groove 33 of the fixing ring 32 through the threaded rod 37 and the threaded cylinder 35. The hand wheel 36 is further lifted to lift the pressure plate 38 out of the material holding screen drum 31, so that the screen drum opening of the material holding screen drum 31 is opened, and the operator can add water-quenched slag into the material holding screen drum 31. The upper surface of the fixing ring 32 is provided with a covering ring groove 33, and the outer side wall thereof is symmetrically mounted with handles 39. When it is necessary to remove an entire material holding assembly 3 from the pickling device, the operator can lift the fixing ring 32 through the handle 39, and the fixing ring 32 drives the material holding screen drum 31 to disengage from the installation channel 233, thereby separating the material holding assembly 3 from the pickling device.

[0031] It should be noted that, in the above structure, the aperture of the sieve holes of the material holding screen drum 31 is larger than the aperture of the sieve holes of the filter screen drum 21. The larger sieve holes of the material holding screen drum 31 help the pickling liquid to flow freely inside the material holding screen drum 31, ensuring that all parts of the water-quenched slag can fully contact the pickling liquid, thereby improving the pickling efficiency and reaction uniformity. During the pickling process, the water-quenched slag reacts with the pickling liquid to produce a certain amount of gas. The larger sieve hole design can facilitate the escape of these gases from the material holding screen drum 31. The main function of the filter screen drum 21 is to filter out solid particles and impurities in the pickling liquid. The smaller sieve hole diameter of the filter screen drum 21 can effectively intercept these solid particles and impurities, thereby improving the recovery quality of the pickling liquid. During the recovery and treatment of the pickling liquid, the smaller sieve hole diameter can prevent solid particles and impurities from entering subsequent equipment.

[0032] As one of the preferred embodiments of the present invention, Figure 1 、 Figure 2 and Figure 3As shown, the lifting assembly 5 includes a lifting cylinder 51, a connecting rod 52, and a fixing screw 55. The cylinder end of the lifting cylinder 51 is connected to the chassis 1, and one end of the connecting rod 52 is provided with a connecting head 53. The other end of the connecting rod 52 is connected to the telescopic rod end of the lifting cylinder 51. A first threaded hole 54 is longitudinally penetrated inside the connecting head 53; the circumferential side walls of the mounting cover 23 are symmetrically provided with fixing slots 231 that can be engaged with the connecting head 53. The top and bottom of the fixing slot 231 are respectively provided with second threaded holes 232. The second threaded hole 232 is coaxially arranged with the first threaded hole 54. The fixing screw 55 fixes the connecting head 53 in the fixing slot 231 through the second threaded hole 232 and the first threaded hole 54.

[0033] One end of the connecting rod 52 is connected to the telescopic rod end of the lifting cylinder 51, and the other end of the connecting rod 52 cooperates with the fixed slot 231 of the mounting cover 23 through the connecting head 53. The fixing slots 231 that can be engaged with the connecting head 53 are symmetrically arranged on the circumferential side walls of the mounting cover 23. The fixing slots 231 not only provide a stable engaging point for the connecting head 53, but also ensure stability during the lifting process. A second threaded hole 232 is correspondingly provided at the top and bottom of each fixing slot 231. The second threaded hole 232 is coaxially arranged with the first threaded hole 54 inside the connecting head 53. When the connecting head 53 is inserted into the fixing slot 231, the fixing screw 55 can fix the connecting head 53 in the fixing slot 231 through the second threaded hole 232 and the first threaded hole 54.

[0034] When the mounting cover 23 needs to be raised, the telescopic rod of the lifting electric cylinder 51 begins to extend, pushing the connecting rod 52 to move upward. Since one end of the connecting rod 52 is connected to the lifting electric cylinder 51, and the other end is connected to the fixed slot 231 of the mounting cover 23 through the connecting head 53 and the fixing screw 55, the upward movement of the connecting rod 52 will drive the mounting cover 23 to rise together, and the bottom end of the mounting cover 23 rises and disengages from the upper ring groove 221, thereby driving the material screen cylinder 31 of the material holding assembly 3 on the mounting cover 23 to disengage from the pickling cylinder 2. On the contrary, when the mounting cover 23 needs to be lowered, the telescopic rod of the lifting electric cylinder 51 begins to shorten, pulling the connecting rod 52 to move downward. Similarly, due to the firm connection between the connecting rod 52 and the mounting cover 23, the downward movement of the connecting rod 52 will drive the mounting cover 23 to be lowered together.

[0035] When it is necessary to clean the filter screen cartridge 21, first, by operating the lifting electric cylinder 51 of the lifting assembly 5, the telescopic rod is extended, and the connecting rod 52 is pushed upward. The upward movement of the connecting rod 52 will drive the mounting cover 23 and the material holding assembly 3 thereon to rise together, thereby separating them from the pickling cylinder 2. When the mounting cover 23 and the material holding assembly 3 are raised, since the filter screen cartridge 21 is connected to the mounting ring 22, the operator lifts the mounting ring 22 to separate the filter screen cartridge 21 from the pickling cylinder 2, and removes the filter screen cartridge 21 from the top of the pickling cylinder 2, so that the solid particles and impurities in the filter screen cartridge 21 can be subsequently cleaned.

[0036] As one of the preferred embodiments of the present invention, Figure 1 and Figure 4 As shown, the stirring assembly 4 includes a driving motor 41, a rotating shaft 42, and a U-shaped stirring frame 43. The driving motor 41 is installed on the top of the mounting cover 23, and the U-shaped stirring frame 43 is arranged in the filter screen cylinder 21. The rotating shaft 42 is rotatably installed in the mounting cover 23. The upper end of the rotating shaft 42 is connected to the power output shaft of the driving motor 41, and the lower end of the rotating shaft 42 is connected to the U-shaped stirring frame 43. The lower end of the material screen cylinder 31 is placed between the U-shaped stirring frame 43 and the rotating shaft 42.

[0037] After the drive motor 41 is started, the rotational power is transmitted to the U-shaped stirring frame 43 through the rotating shaft 42, so that the U-shaped stirring frame 43 rotates and stirs the acid leaching liquid in the filter screen drum 21. At the same time, the material screen drum 31 is placed between the U-shaped stirring frame 43 and the rotating shaft 42, ensuring the uniformity of stirring and sufficient reaction of the water-quenched slag. During the stirring process, the lower end of the material screen drum 31 is placed between the U-shaped stirring frame 43 and the rotating shaft 42. This design not only ensures the uniformity of stirring, but also avoids interference with the material screen drum 31 during the stirring process. The water-quenched slag in the material screen drum 31 can more fully contact and react with the acid leaching liquid under the stirring action.

[0038] The above is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. An acid leaching device for acidification and modification of water-quenched slag, comprising a chassis (1), characterized in that: The chassis (1) is connected to an acid leaching cylinder (2), a filter screen cylinder (21) is provided inside the acid leaching cylinder (2), a plurality of material holding components (3) are provided inside the filter screen cylinder (21), a mounting ring (22) is provided on the top of the filter screen cylinder (21), a mounting cover (23) is installed on the top of the mounting ring (22), the material holding component (3) is installed on the mounting cover (23), the material holding component (3) is provided with a material holding screen cylinder (31) inside the filter screen cylinder (21), lifting components (5) connected to the mounting cover (23) are symmetrically provided on the left and right sides of the acid leaching cylinder (2), and a stirring component (4) movably connected to the mounting cover (23) is provided between the material holding components (3).

2. The acid leaching device for acidification and modification of water-quenched slag according to claim 1, characterized in that: The top outer side wall of the filter screen cylinder (21) is connected to the inner wall of the mounting ring (22); the top and bottom surfaces of the mounting ring (22) are provided with an upper ring groove (221) and a lower ring groove (222) that are parallel and opposite to each other; the top side wall of the pickling cylinder (2) is detachably mounted in the lower ring groove (222); and the bottom side wall of the mounting cover (23) is detachably mounted in the upper ring groove (221).

3. The acid leaching device for acidification and modification of water-quenched slag according to claim 1, characterized in that: A liquid inlet pipe (24) communicating with the interior of the pickling cylinder (2) is provided on the side wall at the top position of the pickling cylinder (2), and a liquid discharge pipe (25) communicating with the interior of the pickling cylinder (2) is provided on the side wall at the bottom position of the pickling cylinder (2). Both the liquid discharge pipe (25) and the liquid inlet pipe (24) are equipped with valves (26).

4. The acid leaching device for acidification and modification of water-quenched slag according to claim 1, characterized in that: The material holding assembly (3) further comprises a fixing ring (32), a top cover (34), a threaded barrel (35), a hand wheel (36), a threaded rod (37), and a pressing plate (38). The upper surface of the mounting cover (23) is provided with a plurality of mounting channels (233) that are rotationally symmetrically distributed. The material holding screen barrel (31) is mounted on the mounting cover (23) through the mounting channels (233). The fixing ring (32) is provided above the mounting channels (233) on the upper surface of the mounting cover (23). A cover-closing ring groove (33) is provided on the upper surface of the fixing ring (32). The lower surface of the fixing ring (32) is connected to the top surface of the material holding screen barrel (31). The barrel body of the material holding screen barrel (31) is placed in the mounting channels (233).

5. The acid leaching device for acidification and modification of water-quenched slag according to claim 4, characterized in that: The top cover (34) is provided with a cover ring groove (33) on the upper surface, and the bottom end of the top cover (34) is detachably installed in the cover ring groove (33) of the top cover (34). The surface of the top cover (34) is provided with a plurality of exhaust pipes (341) connected to the interior of the pickling cylinder (2). A threaded cylinder (35) is vertically penetrated through the center of the top cover (34), and a threaded rod (37) with threaded matching is provided inside the threaded cylinder (35). The pressing plate (38) is arranged in the material screen cylinder (31), and the hand wheel (36) is arranged above the top cover (34). The upper end of the threaded rod (37) is connected to the hand wheel (36), and the lower end of the threaded rod (37) is connected to the pressing plate (38).

6. The acid leaching device for acidification and modification of water-quenched slag according to claim 1, characterized in that: The lifting assembly (5) includes a lifting cylinder (51), a connecting rod (52), and a fixing screw (55). The cylinder end of the lifting cylinder (51) is connected to the chassis (1). One end of the connecting rod (52) is provided with a connecting head (53). The other end of the connecting rod (52) is connected to the telescopic rod end of the lifting cylinder (51). A first threaded hole (54) is longitudinally provided inside the connecting head (53).

7. The acid leaching device for acidification and modification of water-quenched slag according to claim 6, characterized in that: The mounting cover (23) is symmetrically provided with a fixing slot (231) on the circumferential side wall thereof, and is capable of engaging with the connector (53). The top and bottom of the fixing slot (231) are respectively provided with a second threaded hole (232). The second threaded hole (232) is coaxially arranged with the first threaded hole (54). The fixing screw (55) fixes the connector (53) in the fixing slot (231) through the second threaded hole (232) and the first threaded hole (54).

8. The acid leaching device for acidification and modification of water-quenched slag according to claim 1, characterized in that: The stirring assembly (4) includes a driving motor (41), a rotating shaft (42), and a U-shaped stirring frame (43). The driving motor (41) is installed on the top of the installation cover (23). The U-shaped stirring frame (43) is arranged in the filter screen cylinder (21). The rotating shaft (42) is rotatably installed in the installation cover (23). The upper end of the rotating shaft (42) is connected to the power output shaft of the driving motor (41), and the lower end of the rotating shaft (42) is connected to the U-shaped stirring frame (43). The lower end of the material screen cylinder (31) is placed between the U-shaped stirring frame (43) and the rotating shaft (42).

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